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COMP Cams 933-1 Dual Valve Spring 1.550" OD Hi-Tech Oval Track

(Ford F-150 1975-95, Mustang 1964-73, 1979, 1982-95, F-250 1976-78, 1980-95, Bronco 1966-77, 1980-95, Thunderbird 1977-81, 1983-88, 1991-93 + 187 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

933-1
7 reviews
Sale Price

$17.95

Estimated ship date Monday, November 23

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Product Details

The COMP Cams 933-1 is a high-performance dual valve spring designed for hi-tech oval track and demanding racing applications. Manufactured from Super Clean wire and subjected to extensive quality control testing, this spring delivers superior strength, durability, and valve train stability for high-rpm performance engines.

Key Specifications:

  • Outer spring outside diameter: 1.550 inches (1.563" nominal)
  • Inner spring inside diameter: 0.730 inches
  • Outer spring inside diameter: 1.128 inches
  • Seat pressure: 171 lbs at 1.950 inches installed height
  • Open pressure: 492 lbs at 1.300 inches
  • Spring rate: 494 lbs/inch
  • Coil bind height: 1.200 inches
  • Maximum valve lift: 0.650 inches
  • Includes internal damper for valve train stability

Features & Benefits:

  • Dual spring design provides superior strength for extreme stress applications
  • Precision-engineered to match high-performance camshaft profiles
  • Must be properly matched to camshaft specifications for optimal engine performance
  • Ideal for racing and competition engines operating at high RPM
  • Compatible with COMP Cams retainers (741-1), spring seats (4781-1 for .570" guide diameter, 4782-1 for .630" guide diameter), and spring cups (4700-1)

Sold individually. Part of COMP Cams' NASCAR and oval track valve spring lineup, proven in championship-winning racing applications.

Products specifications

Fits

Ford F-150 1975-95, Mustang 1964-73, 1979, 1982-95, F-250 1976-78, 1980-95, Bronco 1966-77, 1980-95, Thunderbird 1977-81, 1983-88, 1991-93, F-350 1975-78, 1980, Maverick 1971-77, Galaxie 500 1963-74, F-100 1975-83, Fairlane 1963-70 + 182 more models

Number of Springs

2

Inner Spring Inside Diameter

0.719

Outer Spring Inside Diameter

1.128

Coil Bind Height

1.2

Outer Spring Outside Diameter

1.563

Seat Height

1.95

Seat Pressure

171

Compatible Spring Cup (O.D. Locator)

4700-1

Compatible Shims

4757

Compatible .570" Guide Diameter Spring Seat

4781-1

Compatible .630" Guide Diameter Spring Seat

4782-1

Spring Rate

494

Compatible Retainer

741-1

Damper

Yes

AMAZON ASIN

B00062Z9US

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

Yes

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exemption Reason

No impact on pollution output of vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

good so far, just ordered a part not available anywhere but autoplicity

product just as described, received in 3 days

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

Very informative and easy to purchase an item. Very competitive prices including shipping. Seamless, easy forms for purchasing and very good to excellant communications in reporting the status of your purchase. Will be back again for needed items in the future.

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